For use in Models 400, 400A and 400M.
Estimated ship date: Thursday, March 13th
The kit includes everything you need to make your Aprilaire 400 like new: Part number 45 water panel (2 pack for one season), #4403 Scale Control Insert (black plastic frame), #4407 Water Distribution Tray, #4335 feed tube and compression sleeve that includes #4231 yellow orifice, which meters the water flow going into the humidifier, and #4004 inline strainer.
PLEASE NOTE: This maintenance kit does not include #4406 Float Assembly or #4405 Float Cover. It is also not for models 440, 445, 445A or 448.